Lenovo G40 Series manual Errors without messages, Problem, Solution

	Solving computer problems
Message	Solution
EMM386 Not Installed	Edit C:\CONFIG.SYS and change a line from
— Unable to Set Page	device=C:\WINDOWS\EMM386.EXE RAM
Frame Base Address.
	to
	device=C:\WINDOWS\EMM386.EXE NOEMS
	and save this file.
CardBus Configuration	Go to the BIOS Setup Utility. Press F9 and then Enter to load the default
Error —Device Disabled	setting.
	Press F10 and then Enter to restart the system.
Thermal sensing error	The thermal sensor is not functioning correctly. Have the computer serviced.

Errors without messages

Problem:

When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up.

Note: If you are not sure whether you heard any beeps, turn off the computer; then turn it on again, and listen again. If you are using an external monitor, refer to “Computer screen problems” on page 23.

Solution:

If a power-on password is set, press any key to display the power-on password prompt, and then type the correct password and press Enter.

If the power-on password prompt does not appear, the brightness level might be set to minimum brightness. Adjust the brightness level by pressing Fn+Home.

If the screen still remains blank, make sure that:

vThe battery is installed correctly.

vThe ac adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

vThe computer power is on. (Turn on the power switch again for confirmation.)

If these items are properly set, and the screen remains blank, have the computer serviced.

Problem:

When I turn on the machine, nothing appears on the screen, but I hear two or more beeps.

Chapter 2. Solving computer problems 17